Examples with SiddhiAppCreationException org.wso2.siddhi.core.exception.SiddhiAppCreationException used on opensource projects

Example 16 with SiddhiAppCreationException

use of org.wso2.siddhi.core.exception.SiddhiAppCreationException in project siddhi by wso2.

the class AggregationParser method setTimeStampTimeZoneExecutors.

private static ExpressionExecutor[] setTimeStampTimeZoneExecutors(AggregationDefinition aggregationDefinition, SiddhiAppContext siddhiAppContext, Map<String, Table> tableMap, List<VariableExpressionExecutor> variableExpressionExecutors, String aggregatorName, MetaStreamEvent metaStreamEvent) {
    Expression timestampExpression = aggregationDefinition.getAggregateAttribute();
    Expression timeZoneExpression;
    ExpressionExecutor timestampExecutor;
    ExpressionExecutor timeZoneExecutor;
    boolean isSystemTimeBased = false;
    // When execution is based on system time, the system's time zone would be used.
    if (timestampExpression == null) {
        isSystemTimeBased = true;
        timestampExpression = AttributeFunction.function("currentTimeMillis", null);
    }
    timestampExecutor = ExpressionParser.parseExpression(timestampExpression, metaStreamEvent, 0, tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, aggregatorName);
    if (timestampExecutor.getReturnType() == Attribute.Type.STRING) {
        Expression expression = AttributeFunction.function("incrementalAggregator", "timestampInMilliseconds", timestampExpression);
        timestampExecutor = ExpressionParser.parseExpression(expression, metaStreamEvent, 0, tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, aggregatorName);
        timeZoneExpression = AttributeFunction.function("incrementalAggregator", "getTimeZone", timestampExpression);
        timeZoneExecutor = ExpressionParser.parseExpression(timeZoneExpression, metaStreamEvent, 0, tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, aggregatorName);
    } else if (timestampExecutor.getReturnType() == Attribute.Type.LONG) {
        if (isSystemTimeBased) {
            timeZoneExpression = AttributeFunction.function("incrementalAggregator", "getTimeZone", null);
            timeZoneExecutor = ExpressionParser.parseExpression(timeZoneExpression, metaStreamEvent, 0, tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, aggregatorName);
        } else {
            // If long value is given, it's assumed that the
            timeZoneExpression = Expression.value("+00:00");
            // time zone is GMT
            timeZoneExecutor = ExpressionParser.parseExpression(timeZoneExpression, metaStreamEvent, 0, tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, aggregatorName);
        }
    } else {
        throw new SiddhiAppCreationException("AggregationDefinition '" + aggregationDefinition.getId() + "'s aggregateAttribute expects " + "long or string, but found " + timestampExecutor.getReturnType() + ". " + "Hence, can't create the siddhi app '" + siddhiAppContext.getName() + "'", timestampExpression.getQueryContextStartIndex(), timestampExpression.getQueryContextEndIndex());
    }
    return new ExpressionExecutor[] { timestampExecutor, timeZoneExecutor };
}

Example 17 with SiddhiAppCreationException

use of org.wso2.siddhi.core.exception.SiddhiAppCreationException in project siddhi by wso2.

the class AggregationParser method populateIncomingAggregatorsAndExecutors.

private static void populateIncomingAggregatorsAndExecutors(AggregationDefinition aggregationDefinition, SiddhiAppContext siddhiAppContext, Map<String, Table> tableMap, List<VariableExpressionExecutor> incomingVariableExpressionExecutors, String aggregatorName, MetaStreamEvent incomingMetaStreamEvent, List<ExpressionExecutor> incomingExpressionExecutors, List<IncrementalAttributeAggregator> incrementalAttributeAggregators, List<Variable> groupByVariableList, List<Expression> outputExpressions) {
    ExpressionExecutor[] timeStampTimeZoneExecutors = setTimeStampTimeZoneExecutors(aggregationDefinition, siddhiAppContext, tableMap, incomingVariableExpressionExecutors, aggregatorName, incomingMetaStreamEvent);
    ExpressionExecutor timestampExecutor = timeStampTimeZoneExecutors[0];
    ExpressionExecutor timeZoneExecutor = timeStampTimeZoneExecutors[1];
    Attribute timestampAttribute = new Attribute("AGG_TIMESTAMP", Attribute.Type.LONG);
    incomingMetaStreamEvent.addOutputData(timestampAttribute);
    incomingExpressionExecutors.add(timestampExecutor);
    incomingMetaStreamEvent.addOutputData(new Attribute("AGG_TIMEZONE", Attribute.Type.STRING));
    incomingExpressionExecutors.add(timeZoneExecutor);
    AbstractDefinition incomingLastInputStreamDefinition = incomingMetaStreamEvent.getLastInputDefinition();
    for (Variable groupByVariable : groupByVariableList) {
        incomingMetaStreamEvent.addOutputData(incomingLastInputStreamDefinition.getAttributeList().get(incomingLastInputStreamDefinition.getAttributePosition(groupByVariable.getAttributeName())));
        incomingExpressionExecutors.add(ExpressionParser.parseExpression(groupByVariable, incomingMetaStreamEvent, 0, tableMap, incomingVariableExpressionExecutors, siddhiAppContext, false, 0, aggregatorName));
    }
    // Add AGG_TIMESTAMP to output as well
    outputExpressions.add(Expression.variable("AGG_TIMESTAMP"));
    aggregationDefinition.getAttributeList().add(timestampAttribute);
    for (OutputAttribute outputAttribute : aggregationDefinition.getSelector().getSelectionList()) {
        Expression expression = outputAttribute.getExpression();
        if (expression instanceof AttributeFunction) {
            IncrementalAttributeAggregator incrementalAggregator = null;
            try {
                incrementalAggregator = (IncrementalAttributeAggregator) SiddhiClassLoader.loadExtensionImplementation(new AttributeFunction("incrementalAggregator", ((AttributeFunction) expression).getName(), ((AttributeFunction) expression).getParameters()), IncrementalAttributeAggregatorExtensionHolder.getInstance(siddhiAppContext));
            } catch (SiddhiAppCreationException ex) {
                try {
                    SiddhiClassLoader.loadExtensionImplementation((AttributeFunction) expression, FunctionExecutorExtensionHolder.getInstance(siddhiAppContext));
                    ExpressionExecutor expressionExecutor = ExpressionParser.parseExpression(expression, incomingMetaStreamEvent, 0, tableMap, incomingVariableExpressionExecutors, siddhiAppContext, false, 0, aggregatorName);
                    incomingExpressionExecutors.add(expressionExecutor);
                    incomingMetaStreamEvent.addOutputData(new Attribute(outputAttribute.getRename(), expressionExecutor.getReturnType()));
                    aggregationDefinition.getAttributeList().add(new Attribute(outputAttribute.getRename(), expressionExecutor.getReturnType()));
                    outputExpressions.add(Expression.variable(outputAttribute.getRename()));
                } catch (SiddhiAppCreationException e) {
                    throw new SiddhiAppCreationException("'" + ((AttributeFunction) expression).getName() + "' is neither a incremental attribute aggregator extension or a function" + " extension", expression.getQueryContextStartIndex(), expression.getQueryContextEndIndex());
                }
            }
            if (incrementalAggregator != null) {
                initIncrementalAttributeAggregator(incomingLastInputStreamDefinition, (AttributeFunction) expression, incrementalAggregator);
                incrementalAttributeAggregators.add(incrementalAggregator);
                aggregationDefinition.getAttributeList().add(new Attribute(outputAttribute.getRename(), incrementalAggregator.getReturnType()));
                outputExpressions.add(incrementalAggregator.aggregate());
            }
        } else {
            if (expression instanceof Variable && groupByVariableList.contains(expression)) {
                Attribute groupByAttribute = null;
                for (Attribute attribute : incomingMetaStreamEvent.getOutputData()) {
                    if (attribute.getName().equals(((Variable) expression).getAttributeName())) {
                        groupByAttribute = attribute;
                        break;
                    }
                }
                if (groupByAttribute == null) {
                    throw new SiddhiAppCreationException("Expected GroupBy attribute '" + ((Variable) expression).getAttributeName() + "' not used in aggregation '" + aggregatorName + "' processing.", expression.getQueryContextStartIndex(), expression.getQueryContextEndIndex());
                }
                aggregationDefinition.getAttributeList().add(new Attribute(outputAttribute.getRename(), groupByAttribute.getType()));
                outputExpressions.add(Expression.variable(groupByAttribute.getName()));
            } else {
                ExpressionExecutor expressionExecutor = ExpressionParser.parseExpression(expression, incomingMetaStreamEvent, 0, tableMap, incomingVariableExpressionExecutors, siddhiAppContext, false, 0, aggregatorName);
                incomingExpressionExecutors.add(expressionExecutor);
                incomingMetaStreamEvent.addOutputData(new Attribute(outputAttribute.getRename(), expressionExecutor.getReturnType()));
                aggregationDefinition.getAttributeList().add(new Attribute(outputAttribute.getRename(), expressionExecutor.getReturnType()));
                outputExpressions.add(Expression.variable(outputAttribute.getRename()));
            }
        }
    }
}

Example 18 with SiddhiAppCreationException

use of org.wso2.siddhi.core.exception.SiddhiAppCreationException in project siddhi by wso2.

the class AggregationParser method validateBaseAggregators.

private static void validateBaseAggregators(List<IncrementalAttributeAggregator> incrementalAttributeAggregators, IncrementalAttributeAggregator incrementalAttributeAggregator, Attribute[] baseAttributes, Expression[] baseAttributeInitialValues, Expression[] baseAggregators, int i) {
    for (int i1 = i; i1 < incrementalAttributeAggregators.size(); i1++) {
        IncrementalAttributeAggregator otherAttributeAggregator = incrementalAttributeAggregators.get(i1);
        if (otherAttributeAggregator != incrementalAttributeAggregator) {
            Attribute[] otherBaseAttributes = otherAttributeAggregator.getBaseAttributes();
            Expression[] otherBaseAttributeInitialValues = otherAttributeAggregator.getBaseAttributeInitialValues();
            Expression[] otherBaseAggregators = otherAttributeAggregator.getBaseAggregators();
            for (int j = 0; j < otherBaseAttributes.length; j++) {
                if (baseAttributes[i].equals(otherBaseAttributes[j])) {
                    if (!baseAttributeInitialValues[i].equals(otherBaseAttributeInitialValues[j])) {
                        throw new SiddhiAppCreationException("BaseAttributes having same name should " + "be defined with same initial values, but baseAttribute '" + baseAttributes[i] + "' is defined in '" + incrementalAttributeAggregator.getClass().getName() + "' and '" + otherAttributeAggregator.getClass().getName() + "' with different initial values.");
                    }
                    if (!baseAggregators[i].equals(otherBaseAggregators[j])) {
                        throw new SiddhiAppCreationException("BaseAttributes having same name should " + "be defined with same baseAggregators, but baseAttribute '" + baseAttributes[i] + "' is defined in '" + incrementalAttributeAggregator.getClass().getName() + "' and '" + otherAttributeAggregator.getClass().getName() + "' with different baseAggregators.");
                    }
                }
            }
        }
    }
}

Example 19 with SiddhiAppCreationException

use of org.wso2.siddhi.core.exception.SiddhiAppCreationException in project siddhi by wso2.

the class CollectionExpressionParser method buildMultiPrimaryKeyExpressionExecutors.

private static Map<String, ExpressionExecutor> buildMultiPrimaryKeyExpressionExecutors(CollectionExpression collectionExpression, MatchingMetaInfoHolder matchingMetaInfoHolder, List<VariableExpressionExecutor> variableExpressionExecutors, Map<String, Table> tableMap, SiddhiAppContext siddhiAppContext, String queryName) {
    if (collectionExpression instanceof AndMultiPrimaryKeyCollectionExpression) {
        CollectionExpression leftCollectionExpression = ((AndMultiPrimaryKeyCollectionExpression) collectionExpression).getLeftCollectionExpression();
        CollectionExpression rightCollectionExpression = ((AndMultiPrimaryKeyCollectionExpression) collectionExpression).getRightCollectionExpression();
        Map<String, ExpressionExecutor> expressionExecutors = buildMultiPrimaryKeyExpressionExecutors(leftCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, queryName);
        expressionExecutors.putAll(buildMultiPrimaryKeyExpressionExecutors(rightCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, queryName));
        return expressionExecutors;
    } else if (collectionExpression instanceof AndCollectionExpression) {
        CollectionExpression leftCollectionExpression = ((AndCollectionExpression) collectionExpression).getLeftCollectionExpression();
        CollectionExpression rightCollectionExpression = ((AndCollectionExpression) collectionExpression).getLeftCollectionExpression();
        Map<String, ExpressionExecutor> expressionExecutors = buildMultiPrimaryKeyExpressionExecutors(leftCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, queryName);
        expressionExecutors.putAll(buildMultiPrimaryKeyExpressionExecutors(rightCollectionExpression, matchingMetaInfoHolder, variableExpressionExecutors, tableMap, siddhiAppContext, queryName));
        return expressionExecutors;
    } else if (collectionExpression instanceof CompareCollectionExpression) {
        if (((CompareCollectionExpression) collectionExpression).getOperator() == Compare.Operator.EQUAL) {
            CollectionExpression attributeCollectionExpression = ((CompareCollectionExpression) collectionExpression).getAttributeCollectionExpression();
            if (attributeCollectionExpression instanceof AttributeCollectionExpression) {
                String attribue = ((AttributeCollectionExpression) attributeCollectionExpression).getAttribute();
                CollectionExpression valueCollectionExpression = ((CompareCollectionExpression) collectionExpression).getValueCollectionExpression();
                ExpressionExecutor valueExpressionExecutor = ExpressionParser.parseExpression(valueCollectionExpression.getExpression(), matchingMetaInfoHolder.getMetaStateEvent(), matchingMetaInfoHolder.getCurrentState(), tableMap, variableExpressionExecutors, siddhiAppContext, false, 0, queryName);
                Map<String, ExpressionExecutor> expressionExecutors = new HashMap<String, ExpressionExecutor>();
                expressionExecutors.put(attribue, valueExpressionExecutor);
                return expressionExecutors;
            } else {
                throw new SiddhiAppCreationException("Only attribute EQUAL " + "comparision supported for multiple primary key optimization, " + "but found  '" + attributeCollectionExpression.getClass() + "'", collectionExpression.getExpression().getQueryContextStartIndex(), collectionExpression.getExpression().getQueryContextEndIndex());
            }
        } else {
            throw new SiddhiAppCreationException("Only '" + Compare.Operator.EQUAL + "' supported for multiple " + "primary key for multiple primary key optimization, but found '" + ((CompareCollectionExpression) collectionExpression).getOperator() + "'", collectionExpression.getExpression().getQueryContextStartIndex(), collectionExpression.getExpression().getQueryContextEndIndex());
        }
    } else {
        // Attribute Collection
        throw new SiddhiAppCreationException("Only 'AND' and '" + Compare.Operator.EQUAL + "' operators are " + "supported for multiple primary key optimization, but found '" + ((CompareCollectionExpression) collectionExpression).getOperator() + "'", collectionExpression.getExpression().getQueryContextStartIndex(), collectionExpression.getExpression().getQueryContextEndIndex());
    }
}

Example 20 with SiddhiAppCreationException

use of org.wso2.siddhi.core.exception.SiddhiAppCreationException in project siddhi by wso2.

the class ExpressionParser method parseExpression.

/**
 * Parse the given expression and create the appropriate Executor by recursively traversing the expression
 *
 * @param expression              Expression to be parsed
 * @param metaEvent               Meta Event
 * @param currentState            Current state number
 * @param tableMap                Event Table Map
 * @param executorList            List to hold VariableExpressionExecutors to update after query parsing @return
 * @param siddhiAppContext        SiddhiAppContext
 * @param groupBy                 is for groupBy expression
 * @param defaultStreamEventIndex Default StreamEvent Index
 * @param queryName               query name of expression belongs to.
 * @return ExpressionExecutor
 */
public static ExpressionExecutor parseExpression(Expression expression, MetaComplexEvent metaEvent, int currentState, Map<String, Table> tableMap, List<VariableExpressionExecutor> executorList, SiddhiAppContext siddhiAppContext, boolean groupBy, int defaultStreamEventIndex, String queryName) {
    try {
        if (expression instanceof And) {
            return new AndConditionExpressionExecutor(parseExpression(((And) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName), parseExpression(((And) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName));
        } else if (expression instanceof Or) {
            return new OrConditionExpressionExecutor(parseExpression(((Or) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName), parseExpression(((Or) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName));
        } else if (expression instanceof Not) {
            return new NotConditionExpressionExecutor(parseExpression(((Not) expression).getExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName));
        } else if (expression instanceof Compare) {
            if (((Compare) expression).getOperator() == Compare.Operator.EQUAL) {
                return parseEqualCompare(parseExpression(((Compare) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName), parseExpression(((Compare) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName));
            } else if (((Compare) expression).getOperator() == Compare.Operator.NOT_EQUAL) {
                return parseNotEqualCompare(parseExpression(((Compare) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName), parseExpression(((Compare) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName));
            } else if (((Compare) expression).getOperator() == Compare.Operator.GREATER_THAN) {
                return parseGreaterThanCompare(parseExpression(((Compare) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName), parseExpression(((Compare) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName));
            } else if (((Compare) expression).getOperator() == Compare.Operator.GREATER_THAN_EQUAL) {
                return parseGreaterThanEqualCompare(parseExpression(((Compare) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName), parseExpression(((Compare) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName));
            } else if (((Compare) expression).getOperator() == Compare.Operator.LESS_THAN) {
                return parseLessThanCompare(parseExpression(((Compare) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName), parseExpression(((Compare) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName));
            } else if (((Compare) expression).getOperator() == Compare.Operator.LESS_THAN_EQUAL) {
                return parseLessThanEqualCompare(parseExpression(((Compare) expression).getLeftExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName), parseExpression(((Compare) expression).getRightExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName));
            }
        } else if (expression instanceof Constant) {
            if (expression instanceof BoolConstant) {
                return new ConstantExpressionExecutor(((BoolConstant) expression).getValue(), Attribute.Type.BOOL);
            } else if (expression instanceof StringConstant) {
                return new ConstantExpressionExecutor(((StringConstant) expression).getValue(), Attribute.Type.STRING);
            } else if (expression instanceof IntConstant) {
                return new ConstantExpressionExecutor(((IntConstant) expression).getValue(), Attribute.Type.INT);
            } else if (expression instanceof LongConstant) {
                return new ConstantExpressionExecutor(((LongConstant) expression).getValue(), Attribute.Type.LONG);
            } else if (expression instanceof FloatConstant) {
                return new ConstantExpressionExecutor(((FloatConstant) expression).getValue(), Attribute.Type.FLOAT);
            } else if (expression instanceof DoubleConstant) {
                return new ConstantExpressionExecutor(((DoubleConstant) expression).getValue(), Attribute.Type.DOUBLE);
            }
        } else if (expression instanceof Variable) {
            return parseVariable((Variable) expression, metaEvent, currentState, executorList, defaultStreamEventIndex);
        } else if (expression instanceof Multiply) {
            ExpressionExecutor left = parseExpression(((Multiply) expression).getLeftValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            ExpressionExecutor right = parseExpression(((Multiply) expression).getRightValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            Attribute.Type type = parseArithmeticOperationResultType(left, right);
            switch(type) {
                case INT:
                    return new MultiplyExpressionExecutorInt(left, right);
                case LONG:
                    return new MultiplyExpressionExecutorLong(left, right);
                case FLOAT:
                    return new MultiplyExpressionExecutorFloat(left, right);
                case DOUBLE:
                    return new MultiplyExpressionExecutorDouble(left, right);
                // Will not happen. Handled in parseArithmeticOperationResultType()
                default:
            }
        } else if (expression instanceof Add) {
            ExpressionExecutor left = parseExpression(((Add) expression).getLeftValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            ExpressionExecutor right = parseExpression(((Add) expression).getRightValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            Attribute.Type type = parseArithmeticOperationResultType(left, right);
            switch(type) {
                case INT:
                    return new AddExpressionExecutorInt(left, right);
                case LONG:
                    return new AddExpressionExecutorLong(left, right);
                case FLOAT:
                    return new AddExpressionExecutorFloat(left, right);
                case DOUBLE:
                    return new AddExpressionExecutorDouble(left, right);
                // Will not happen. Handled in parseArithmeticOperationResultType()
                default:
            }
        } else if (expression instanceof Subtract) {
            ExpressionExecutor left = parseExpression(((Subtract) expression).getLeftValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            ExpressionExecutor right = parseExpression(((Subtract) expression).getRightValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            Attribute.Type type = parseArithmeticOperationResultType(left, right);
            switch(type) {
                case INT:
                    return new SubtractExpressionExecutorInt(left, right);
                case LONG:
                    return new SubtractExpressionExecutorLong(left, right);
                case FLOAT:
                    return new SubtractExpressionExecutorFloat(left, right);
                case DOUBLE:
                    return new SubtractExpressionExecutorDouble(left, right);
                // Will not happen. Handled in parseArithmeticOperationResultType()
                default:
            }
        } else if (expression instanceof Mod) {
            ExpressionExecutor left = parseExpression(((Mod) expression).getLeftValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            ExpressionExecutor right = parseExpression(((Mod) expression).getRightValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            Attribute.Type type = parseArithmeticOperationResultType(left, right);
            switch(type) {
                case INT:
                    return new ModExpressionExecutorInt(left, right);
                case LONG:
                    return new ModExpressionExecutorLong(left, right);
                case FLOAT:
                    return new ModExpressionExecutorFloat(left, right);
                case DOUBLE:
                    return new ModExpressionExecutorDouble(left, right);
                // Will not happen. Handled in parseArithmeticOperationResultType()
                default:
            }
        } else if (expression instanceof Divide) {
            ExpressionExecutor left = parseExpression(((Divide) expression).getLeftValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            ExpressionExecutor right = parseExpression(((Divide) expression).getRightValue(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
            Attribute.Type type = parseArithmeticOperationResultType(left, right);
            switch(type) {
                case INT:
                    return new DivideExpressionExecutorInt(left, right);
                case LONG:
                    return new DivideExpressionExecutorLong(left, right);
                case FLOAT:
                    return new DivideExpressionExecutorFloat(left, right);
                case DOUBLE:
                    return new DivideExpressionExecutorDouble(left, right);
                // Will not happen. Handled in parseArithmeticOperationResultType()
                default:
            }
        } else if (expression instanceof AttributeFunction) {
            // extensions
            Object executor;
            try {
                if ((siddhiAppContext.isFunctionExist(((AttributeFunction) expression).getName())) && (((AttributeFunction) expression).getNamespace()).isEmpty()) {
                    executor = new ScriptFunctionExecutor(((AttributeFunction) expression).getName());
                } else {
                    executor = SiddhiClassLoader.loadExtensionImplementation((AttributeFunction) expression, FunctionExecutorExtensionHolder.getInstance(siddhiAppContext));
                }
            } catch (SiddhiAppCreationException ex) {
                try {
                    executor = SiddhiClassLoader.loadExtensionImplementation((AttributeFunction) expression, AttributeAggregatorExtensionHolder.getInstance(siddhiAppContext));
                } catch (SiddhiAppCreationException e) {
                    throw new SiddhiAppCreationException("'" + ((AttributeFunction) expression).getName() + "' is" + " neither a function extension nor an aggregated attribute extension", expression.getQueryContextStartIndex(), expression.getQueryContextEndIndex());
                }
            }
            ConfigReader configReader = siddhiAppContext.getSiddhiContext().getConfigManager().generateConfigReader(((AttributeFunction) expression).getNamespace(), ((AttributeFunction) expression).getName());
            if (executor instanceof FunctionExecutor) {
                FunctionExecutor expressionExecutor = (FunctionExecutor) executor;
                Expression[] innerExpressions = ((AttributeFunction) expression).getParameters();
                ExpressionExecutor[] innerExpressionExecutors = parseInnerExpression(innerExpressions, metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
                expressionExecutor.initExecutor(innerExpressionExecutors, siddhiAppContext, queryName, configReader);
                if (expressionExecutor.getReturnType() == Attribute.Type.BOOL) {
                    return new BoolConditionExpressionExecutor(expressionExecutor);
                }
                return expressionExecutor;
            } else {
                AttributeAggregator attributeAggregator = (AttributeAggregator) executor;
                Expression[] innerExpressions = ((AttributeFunction) expression).getParameters();
                ExpressionExecutor[] innerExpressionExecutors = parseInnerExpression(innerExpressions, metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
                attributeAggregator.initAggregator(innerExpressionExecutors, siddhiAppContext, configReader);
                AbstractAggregationAttributeExecutor aggregationAttributeProcessor;
                if (groupBy) {
                    aggregationAttributeProcessor = new GroupByAggregationAttributeExecutor(attributeAggregator, innerExpressionExecutors, configReader, siddhiAppContext, queryName);
                } else {
                    aggregationAttributeProcessor = new AggregationAttributeExecutor(attributeAggregator, innerExpressionExecutors, siddhiAppContext, queryName);
                }
                SelectorParser.getContainsAggregatorThreadLocal().set("true");
                return aggregationAttributeProcessor;
            }
        } else if (expression instanceof In) {
            Table table = tableMap.get(((In) expression).getSourceId());
            MatchingMetaInfoHolder matchingMetaInfoHolder = MatcherParser.constructMatchingMetaStateHolder(metaEvent, defaultStreamEventIndex, table.getTableDefinition(), defaultStreamEventIndex);
            CompiledCondition compiledCondition = table.compileCondition(((In) expression).getExpression(), matchingMetaInfoHolder, siddhiAppContext, executorList, tableMap, queryName);
            return new InConditionExpressionExecutor(table, compiledCondition, matchingMetaInfoHolder.getMetaStateEvent().getMetaStreamEvents().length, metaEvent instanceof StateEvent, 0);
        } else if (expression instanceof IsNull) {
            IsNull isNull = (IsNull) expression;
            if (isNull.getExpression() != null) {
                ExpressionExecutor innerExpressionExecutor = parseExpression(isNull.getExpression(), metaEvent, currentState, tableMap, executorList, siddhiAppContext, groupBy, defaultStreamEventIndex, queryName);
                return new IsNullConditionExpressionExecutor(innerExpressionExecutor);
            } else {
                String streamId = isNull.getStreamId();
                Integer streamIndex = isNull.getStreamIndex();
                if (metaEvent instanceof MetaStateEvent) {
                    int[] eventPosition = new int[2];
                    if (streamIndex != null) {
                        if (streamIndex <= LAST) {
                            eventPosition[STREAM_EVENT_INDEX_IN_CHAIN] = streamIndex + 1;
                        } else {
                            eventPosition[STREAM_EVENT_INDEX_IN_CHAIN] = streamIndex;
                        }
                    } else {
                        eventPosition[STREAM_EVENT_INDEX_IN_CHAIN] = defaultStreamEventIndex;
                    }
                    eventPosition[STREAM_EVENT_CHAIN_INDEX] = UNKNOWN_STATE;
                    MetaStateEvent metaStateEvent = (MetaStateEvent) metaEvent;
                    if (streamId == null) {
                        throw new SiddhiAppCreationException("IsNull does not support streamId being null", expression.getQueryContextStartIndex(), expression.getQueryContextEndIndex());
                    } else {
                        MetaStreamEvent[] metaStreamEvents = metaStateEvent.getMetaStreamEvents();
                        for (int i = 0, metaStreamEventsLength = metaStreamEvents.length; i < metaStreamEventsLength; i++) {
                            MetaStreamEvent metaStreamEvent = metaStreamEvents[i];
                            AbstractDefinition definition = metaStreamEvent.getLastInputDefinition();
                            if (metaStreamEvent.getInputReferenceId() == null) {
                                if (definition.getId().equals(streamId)) {
                                    eventPosition[STREAM_EVENT_CHAIN_INDEX] = i;
                                    break;
                                }
                            } else {
                                if (metaStreamEvent.getInputReferenceId().equals(streamId)) {
                                    eventPosition[STREAM_EVENT_CHAIN_INDEX] = i;
                                    if (currentState > -1 && metaStreamEvents[currentState].getInputReferenceId() != null && streamIndex != null && streamIndex <= LAST) {
                                        if (streamId.equals(metaStreamEvents[currentState].getInputReferenceId())) {
                                            eventPosition[STREAM_EVENT_INDEX_IN_CHAIN] = streamIndex;
                                        }
                                    }
                                    break;
                                }
                            }
                        }
                    }
                    return new IsNullStreamConditionExpressionExecutor(eventPosition);
                } else {
                    return new IsNullStreamConditionExpressionExecutor(null);
                }
            }
        }
        throw new UnsupportedOperationException(expression.toString() + " not supported!");
    } catch (Throwable t) {
        ExceptionUtil.populateQueryContext(t, expression, siddhiAppContext);
        throw t;
    }
}